Noncollinear magnetism in transition metal nanostructures: Exchange interaction and local environment effects in free and deposited clusters

2011 ◽  
Vol 84 (2) ◽  
Author(s):  
P. Ruiz-Díaz ◽  
R. Garibay-Alonso ◽  
J. Dorantes-Dávila ◽  
G. M. Pastor
Keyword(s):  
Transition Metal ◽  
Exchange Interaction ◽  
Local Environment ◽  
Metal Nanostructures ◽  
Environment Effects

Exchange interaction and local environment effects on the magnetic properties ofFeNclusters

1992 ◽  
Vol 46 (16) ◽  
pp. 10432-10436 ◽  
Author(s):  
J. Dorantes-Da´vila ◽  
H. Dreysse´ ◽  
G. M. Pastor
Keyword(s):  
Magnetic Properties ◽  
Exchange Interaction ◽  
Local Environment ◽  
Environment Effects

Electronic properties of quasi two-dimensional transition metals chalcogenides with low-dimensional magnetism

Doklady BGUIR ◽  
2020 ◽  
Vol 18 (7) ◽  
pp. 87-95
Author(s):  
M. S. Baranava ◽  
P. A. Praskurava
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Exchange Interaction ◽  
Electronic Properties ◽  
Metal Atom ◽  
Transition Metal Atom ◽  
Two Dimensional ◽  
Transition Metal Atoms ◽  
Ground Magnetic ◽  
Low Dimensional

The search for fundamental physical laws which lead to stable high-temperature ferromagnetism is an urgent task. In addition to the already synthesized two-dimensional materials, there remains a wide list of possible structures, the stability of which is predicted theoretically. The article suggests the results of studying the electronic properties of MAX3 (M = Cr, Fe, A = Ge, Si, X = S, Se, Te) transition metals based compounds with nanostructured magnetism. The research was carried out using quantum mechanical simulation in specialized VASP software and calculations within the Heisenberg model. The ground magnetic states of twodimensional MAX3 and the corresponding energy band structures are determined. We found that among the systems under study, CrGeTe3 is a semiconductor nanosized ferromagnet. In addition, one is a semiconductor with a bandgap of 0.35 eV. Other materials are antiferromagnetic. The magnetic moment in MAX3 is localized on the transition metal atoms: in particular, the main one on the d-orbital of the transition metal atom (and only a small part on the p-orbital of the chalcogen). For CrGeTe3, the exchange interaction integral is calculated. The mechanisms of the formation of magnetic order was established. According to the obtained exchange interaction integrals, a strong ferromagnetic order is formed in the semiconductor plane. The distribution of the projection density of electronic states indicates hybridization between the d-orbital of the transition metal atom and the p-orbital of the chalcogen. The study revealed that the exchange interaction by the mechanism of superexchange is more probabilistic.

Local-environment effects in disordered binary metallic alloys

1992 ◽  
Vol 46 (12) ◽  
pp. 7358-7362 ◽  
Author(s):  
M. Yu. Nikolaev ◽  
L. M. Roth ◽  
A. V. Vedyaev
Keyword(s):  
Local Environment ◽  
Metallic Alloys ◽  
Environment Effects ◽  
Binary Metallic Alloys

Local environment effects on the electronic structure of disordered alloys

1973 ◽  
Vol 3 (12) ◽  
pp. 2120-2125 ◽  
Author(s):  
F Brouers ◽  
F Ducastelle ◽  
F Gautier ◽  
J Van Der Rest
Keyword(s):  
Electronic Structure ◽  
Local Environment ◽  
Disordered Alloys ◽  
Environment Effects
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